Concrete insert



Oct. 10, 1933. 5 c AWBREY 1,929,835

CONCRETE INSERT Filed NOV. 11. 1929 INVENTOR. Samuel 6. flwfirey A TTORNE Y.

Patented Oct. 10, 1933 EFEQE CONCRETE INSERT Samuel C. Awbrey, KansasCity, Mo., assignor to Floor Accessories Kansas City, Mo

Company a corporation of Missouri Incorporated,

Application November 11, 1929 Serial No. 406,325

4 Claims. (Cl. 72 -105) This invention relates to inserts adapted to beembedded in a concrete structure and having an opening in the outer facethereof for the reception of a bolt by means of which members may besecurely attached in position to the concrete structure.

The principal object of the present invention is the provision of aninsert adapted to be embedded in a concrete structure comprising a boxhaving an elongated slot in the outer surface and an irregular surfaceon the inner face of said box adjacent each of the opposite elongatedsides of said slot and a bolt having a head provided with an irregularsurface adapted to be inserted in said slot to engage said irregularsurface in said box to prevent relative movement of said bolt and insertwhen they are in the operative position.

Another object of this invention is the provision of an insert adaptedto receive a bolt for supporting any construction member, said boltbeing mounted in said insert for longitudinal adjustment and meansintegral with said bolt and insert whereby they are maintained in -fixedrelative positions.

A further object of the present invention is the provision of an inserthaving means whereby it is securely anchored in the concrete structure.

Other objects of this invention are simplicity and cheapness ofconstruction'ease of operation and adaptability to various buildingconstructions.

With these general objects in view, as well as minor objects which willappear during the course of the detailed specification, reference willnow be had to the accompanying drawing, in which,

Figure l is a perspective View of an insert embodying this invention.

Fig. 2 is a sectional view of the insert embedded in a concretestructure and to which is attached an angle-iron for supporting thefacing of the building.

Fig. 3 is a fragmentary sectional view taken on line III-III of Fig. 2.

Fig. 4 is a perspective view of the bolt adapted to be used with thepresent insert.

Fig. 5 is a perspective view of a modified form showing a slightlydifferent way of forming the box of the insert.

Fig. 6 is a longitudinal section of a further modification of the insertshowing the entire insert made of a single piece of sheet metal.

Fig. '7 is a perspective view of a modified form of the bolt to be usedwith the insert.

Fig. 8 is a sectional view taken on line VIII-VIII of Fig. '7.

Fig. 9 is a perspective view of a modified form of the insert partlybroken away to more clearly show the construction thereof.

Like reference characters designate similar parts throughout the severalviews and the numeral l0 designates a box formed by a body member 11.and a U-shaped member 12. Body member 11 comprises a flat outer face 13,and members 14 and 15 and side members 16 and 17 which extend inwardlybeyond end members 14 and 15 to form inwardly projecting anchoringmembers 18 and having flanged edges 19 which more se curely anchor theinsert in the concrete structure. Louvers 20 are formed in members 13 toadd to the holding power of the insert in the concrete.

The U-shaped member 12 is formed to snugly fit between end members 14and 15 and side members 16 and 17 to prevent any of the soft concretemixture from entering the box during the process of construction. Tosecure'member 12 in position the members 18 are pressed slightlyinwardly in inwardly converging relation.

Formed in the outer face of member 11 is an elongated slot 21, the edgeof which is preferably spaced apart from the edges of face 13.Inturned'serrated flanges 22 are formed adjacent the longitudinal edgesof slot 21, to engage the serrations 23 formed on the inner face of theelongated head 24 of bolt 25 to prevent relative movement of said insertand bolt when the nut 26 is screwed to position as shown in Fig. 2. Theelongated rectangular head 24 is of a. width slightlynarrower than slot21 so that it can be inserted into the box 10 through the slot 21 thenturned so that the serrations 23 will register with the serrations inflanges 22. While regular serrations for preventing relative movement ofthe parts have been shown, it is evident that any coacting irregularsurfaces will serve the same purpose. Also the in-turned flanges may bedispensed with. Flanges 22 are of sufficient length to permit adjustmentof the bolts to allow proper aligning of structural members to besecured thereby. Holes 28, formed in member 12, are adapted to receivenails, not shown, for securing the insert to inside of the concreteforms prior to the pouring of the concrete. -When the concrete is pouredand the forms removed, the nails which extend through the box may be cutoff so as not to interfere with the proper adjustment of the bolt.

The modified form shown in Fig. 5 shows an insert similar to that shownin Fig. 1 with inturned tabs 30 adapted to secure the member 12 inposition. Also the openings formed in members 18 by pressing tabs 30therefrom, serve to receive concrete, thus adding to the holdingproperties of the insert. It may be desirable in some instances toutilize holes 31 formed through members 18 by passing a reinforcing rodor the like not here shown, through holes 31, allowing the rod toproject outwardly on each side of the insert so that the same will beembedded in the concrete to add an even more secure means for holdingthe insert in place.

In the structure shown in Fig. 6 the member 12 is eliminated and therear of the box 10 is closed by folding a portion of member 11 betweenthe members 18 thus forming the insert from a single piece of sheetmetal.

The modified form of the bolt as shown in Figs. '7 and 8 provides for abolt having an elongated head 40, having a pair of parallel slots 41,which in turn are provided with serrations 42 at their base. Theseserrations serve to engage the serrated flanges 22 to prevent relativemovement of the parts.

It is apparent that the insert as described is suitable for use on theceiling, floor or side wall of a concrete structure to support partsthereon. In Fig. 2 which shows a typical installation when the insert isused on a vertical wall, the same is embedded in the reinforced concretestructure C with its outer face flush with the concrete face. Anangle-iron A which serves as a ledge to support the facing F of thestructure, is secured to the structure by passing the bolt 25 through ahole B formed therein.

Referring to Fig. 9 which shows a modified form of the insert, it willbe noted that the memhers is diverge inwardly, thus presenting a largeropening there-between in order to permit the free movement of a hammerin setting the nails which are inserted in holes 28 to secure the insertto the form during the process of construction. Furthermore, theseangled side members 18 present an anchoring surface which prevents easyrelease of the insert from the concrete; End members 14 and 15, asclearly shown in this figure, have their inner edges positioned inrelative converging position so that the member 12, when pressedtogether and positioned there-between, will be securely held againstdisplacement without any other fastening means.

This construction is simple and eliminates considerable expense in themanufacture.

It will further be noted that the corners of the U-shaped member 12 arerounded, thereby lessening the danger of displacement by the tamping barduring the process of construction.

Since several of these inserts are used to sup port a single angle-iron,and the holes are punched therein away from the job, also it isimpossible to perfectly align the inserts in the concrete structure, itwill be necessary to adjust the bolt up or down in the slot in order toregister it with the hole or slot in the angle. When the nut is screwedto position and the co-acting serrated portions are in inter-lockedrelation, the angle will be secured against movement relative to theconcrete structure.

The insert has been shown as constructed from sheet metal, however, ifso desired, it may be cast or otherwse produced Without affecting thenovel features of this invention.

I do not wish to limit this invention to the structure shown anddescribed since many modifications may be made within the scope of theappended claims without departing from the spirit thereof.

What I claim and desire to secure by Letters Patent is:

l. A concrete insert comprising a box, an elongated opening formed inone side thereof, an inturned flange extending into the box along eachof the opposite sides of said opening, serrations formed on the inneredge of each flange, a bolt projecting from the box through the opening,a head for the bolt within the box, a pair of slots formed in thebolthead each receiving a flange and serrations at the base of each slotengaging the serrations on the edge of said flanges when the bolt is inthe operative position.

2. A concrete insert comprising a box, an elongated opening formed inone side thereof, an inturned flange extending into the box along eachof the opposite sides of said opening, a bolt projecting from the boxthrough the opening, a head for the bolt within the box and parallelslots formed in the bolt head formed to receive the flanges when thebolt is in the operative position.

3. A concrete insert comprising a box, an elongated opening formed inone side thereof, an inturned serrated flange extending into the boxadjacent each of the opposite sides of said opening, anchor membersextending outwardly from the box in spaced-apart, non-parallel relation,flanges at each end of said member, and pressed out steps in the body ofsaid anchor members adapted to be embedded in the concrete.

4. An insert adapted to be embedded in concrete, comprising a box havingclosed ends and an elongated opening in the outer face thereof and aninturned serrated flange extending into the box adjacent each of theopposite sides of said opening and spaced apart from the ends and sidesof said box.

SAMUEL C. AWBREY.

